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Finding the Fourth Proportional to 3,390.42, 5,072.06 and 2,933.12

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Solution

The fourth proportional to 3,390.42, 5,072.06 and 2,933.12 is: 4,387.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,390.42 : 5,072.06 = 2,933.12 : x
  2. Step 2: Convert to fraction form
    3,390.42/5,072.06 = 2,933.12/x
  3. Step 3: Cross multiply
    3,390.42x = 5,072.06 × 2,933.12
  4. Step 4: Simplify right side
    3,390.42x = 14,876,920.60
  5. Step 5: Solve for x
    x = 14,876,920.60/3,390.42
  6. Step 6: Final answer
    x = 4,387.93

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.